CVE-2020-1147
Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution Vulnerability
Published Jul 14, 2020 · updated Jun 16, 2026 · microsoft .net core
Microsoft .NET Framework, Microsoft SharePoint, and Visual Studio contain a remote code execution vulnerability when the software fails to check the source markup of XML file input. Successful exploitation allows an attacker to execute code in the context of the process responsible for deserialization of the XML content.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Jul 14, 2020 · Catalog
Detected
Microsoft .NET Framework, Microsoft SharePoint, and Visual Studio contain a remote code execution vulnerability when the software fails to check the source markup of XML file input. Successful exploitation allows an attacker to execute code in the context of the process responsible for deserialization of the XML content.
Nov 3, 2021 · CISA KEV
Known exploited
Apply updates per vendor instructions.
May 3, 2022 · CISA KEV
Remediation due
Apply updates per vendor instructions.
Jun 16, 2026 · Catalog
Updated
Microsoft .NET Framework, Microsoft SharePoint, and Visual Studio contain a remote code execution vulnerability when the software fails to check the source markup of XML file input. Successful exploitation allows an attacker to execute code in the context of the process responsible for deserialization of the XML content.
Required action
Apply updates per vendor instructions.
CISA due date May 3, 2022
Affected
- cpe microsoft/.net core2.1
- cpe microsoft/.net core3.1
- cpe microsoft/.net framework2.0
- cpe microsoft/.net framework3.0
- cpe microsoft/.net framework3.5
- cpe microsoft/.net framework4.6.2
- cpe microsoft/.net framework4.7
- vendor Microsoft .NET Framework, SharePoint, Visual Studioversion unspecified
Sources
- CISA KEVConfirmed exploitationCVE-2020-1147
Microsoft .NET Framework, Microsoft SharePoint, and Visual Studio contain a remote code execution vulnerability when the software fails to check the source markup of XML file input. Successful exploitation allows an attacker to execute code in the context of the process responsible for deserialization of the XML content.
cisa.gov - CVE.orgVulnerability recordCVE-2020-1147
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2020-1147
30-day exploitation probability 94.0%
first.org - Exploit DatabasePublic exploit reference48747
Public archive entry. The exploit body is not stored here.
exploit-db.com - Exploit DatabasePublic exploit reference50151
Public archive entry. The exploit body is not stored here.
exploit-db.com - Metasploit ModulesPublic exploit moduleexploit_windows/http/sharepoint_data_deserialization
Public module reference (excellent). Module source is not copied into this catalog.
rapid7.com - NIST NVDVulnerability recordCVE-2020-1147
A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and Visual Studio when the software fails to check the source markup of XML file input, aka '.NET Framework, SharePoint Server, and Visual Studio Remote Code Execution Vulnerability'.
nvd.nist.gov - Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.html
Packet Storm link already published on the finding.
packetstormsecurity.com - Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html
Packet Storm link already published on the finding.
packetstormsecurity.com - Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html
Packet Storm link already published on the finding.
packetstormsecurity.com